Natural resources, capital and labor are

they are examples of factors of production

Economists divide the factors of production into four categories: land, labor, capital, and entrepreneurship. The first factor of production is land, but this includes any natural resource used to produce goods and services. ... These resources can be renewable, such as forests, or nonrenewable such as oil or natural gas.

Hope This Helps!

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.